Cl.[CH2:2]([NH2:5])[CH2:3][CH3:4].[O:6]1[C:11]2[CH:12]=[CH:13][CH:14]=[C:15]([CH2:16][CH2:17][CH2:18][C:19](O)=[O:20])[C:10]=2[O:9][CH:8]=[CH:7]1.C(Cl)CCl>CN(C)C=O>[CH2:2]([NH:5][C:19](=[O:20])[CH2:18][CH2:17][CH2:16][C:15]1[C:10]2[O:9][CH:8]=[CH:7][O:6][C:11]=2[CH:12]=[CH:13][CH:14]=1)[CH2:3][CH3:4]A suspension of 0.29 g (2.6 mmol) of n-propylamine hydrochloride in 7 ml of anhydrous N,N-dimethylformamide is cooled to 0° C. and then 0.33 g (3.54 mmol) of N,N-dimethylaminopyridine are added to the mixture. After the addition of 0.41 g (2.36 mmol) of the acid obtained in Step F of Example 40, 0.5 g (2.6 mmol) of EDC is added to the mixture. The solution is stirred for 12 hours under argon at room temperature and then the solvent is evaporated off in vacuo. The residue is taken up in a water/ethyl acetate (1/1) mixture and then the aqueous phase is extracted with ethyl acetate. The organic phase is dried over magnesium sulphate and then concentrated under reduced pressure. Chromatography over silica gel (eluant:AcOEt/PE:70/30) yields the title amide in the form of a clear syrup.
불러오는 중…
